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Display device and a testing method thereof

a technology of display panel and test method, which is applied in the direction of static indicating device, testing fibre optic/optical waveguide device, instruments, etc., can solve the problems of foreign material such as moisture entering the display area of the display panel, display panel defects, and minute cracks that may become larger cracks

Active Publication Date: 2022-05-24
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method enables accurate detection of cracks in display devices, including flexible panels, by measuring resistance changes with varying currents, effectively identifying crack presence and severity without increasing data processing complexity or costs.

Problems solved by technology

When a crack occurs in the display panel, a foreign material such as moisture may penetrate into a display area of the display panel.
When a foreign material enters the display area via a crack, it may cause display panel defects.
For example, when a flexible display has a minute crack in a substrate or stacked layer of its display panel the minute crack may become a larger crack due to curving or bending the flexible display during its manufacture or use.

Method used

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  • Display device and a testing method thereof
  • Display device and a testing method thereof
  • Display device and a testing method thereof

Examples

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Embodiment Construction

[0043]Hereinafter, exemplary embodiments of the present invention will be described more fully with reference to the accompanying drawings. As those skilled in the art would realize, the described embodiments may be modified in various different ways, and thus, should not be limited to the embodiments set forth herein.

[0044]Like reference numerals may designate like elements throughout the specification.

[0045]In the drawings, the thicknesses of layers, films, panels, regions, etc., may be exaggerated for clarity.

[0046]It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” another element, it can be directly on the other element or intervening elements may also be present.

[0047]First, a display device according to an exemplary embodiment of the present invention will be described with reference to FIG. 1 and FIG. 2. FIG. 1 illustrates a perspective view of a display device according to an exemplary embodiment of the present...

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PUM

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Abstract

A display device including: a substrate including a display area and a peripheral area peripheral to the display area; a plurality of pads disposed in a pad area, wherein the pad area is disposed in the peripheral area and the pad area includes an integrated circuit (IC); and a first crack detecting line connected to a first pad and a second pad at a first node, and a third pad at a second node, wherein the first crack detecting line is disposed in the peripheral area between the first node and the second node.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2018-0110967 filed in the Korean Intellectual Property Office on Sep. 17, 2018 the disclosure of which is incorporated by reference herein in its entirety.(a) Field[0002]The present invention relates to a display device and a testing method thereof.(b) Description of the Related Art[0003]As display devices are becoming smaller, lighter, and thinner, they are being designed with increased durability to protect against cracks, scratches, breaks, etc., which may be caused by an external impact or the like.[0004]A display device may include a display panel including pixels that display an image. When a crack occurs in the display panel, a foreign material such as moisture may penetrate into a display area of the display panel. When a foreign material enters the display area via a crack, it may cause display panel defects.[0005]For example, when a flexibl...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01R27/08G01R31/28G09G3/00
CPCG09G3/006G01R27/08G01R31/2836G09G3/035G09G2300/0426G09G2330/12G01N27/041G01N27/20G09G2300/0413G09G2310/0281G01M11/30
Inventor LEE, KWANG SAEKA, JI-HYUNKWAK, WON KYUEOM, KI MYEONGIN, HAI-JUNG
Owner SAMSUNG DISPLAY CO LTD